Finding the Fourth Proportional to 42,870.47, 59,164.37 and 25,878.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,870.47 : 59,164.37 = 25,878.85 : x
2. Step 2: Convert to fraction form
   42,870.47/59,164.37 = 25,878.85/x
3. Step 3: Cross multiply
   42,870.47x = 59,164.37 × 25,878.85
4. Step 4: Simplify right side
   42,870.47x = 1,531,105,856.57
5. Step 5: Solve for x
   x = 1,531,105,856.57/42,870.47
6. Step 6: Final answer
   x = 35,714.70